Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbab52817cb40f69…

MALICIOUS

PDF

45.9 KB Created: 2020-08-10 04:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f8f3205cb4575656bd9297ef44352a0 SHA-1: 25d7cd68ad4ef06b48484d46f957bf3207e74498 SHA-256: bbab52817cb40f6979eac81a6952bbd32deaa73e1337576f3ec46c902d318f3e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a high number of embedded links, many pointing to Shopify domains, but also includes a critical redirector link to 'ttraff.cc'. This suggests a link farm or SEO poisoning tactic to lure users. The presence of a visible LOLBin command execution instruction indicates potential for further malicious activity. The document body, though heavily obfuscated, contains the redirector URL and other PDF download links, reinforcing the lure.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=britannica+pdf+free+download
    • http://files.clarinetrepairs.org/uploads/1/3/1/3/131383544/jevutogopere.pdf
    • http://files.sunsationalsixthgraders.com/uploads/1/3/0/8/130874197/c9226.pdf
    • http://files.transknowledge.co.uk/uploads/1/3/0/7/130775744/vedonu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9199/files/10th_class_chemistry_notes_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/modezomasefafo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/5._56_speed_loader.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/dogilabunalopuru.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8318/files/79622292576.pdf
    • https://cdn.shopify.com/s/files/1/0428/3862/2375/files/64592377442.pdf
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/jabakozinigexosabaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/vojaxirupotagobojozuru.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/git_bash_wget.pdf
    • https://cdn.shopify.com/s/files/1/0433/6192/7318/files/kewopivov.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0317/files/37526215944.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/tepijazonibimonemase.pdf
    • https://cdn.shopify.com/s/files/1/0431/5335/9005/files/list_of_anticancer_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/bibotosewopot.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000666f.bin
1a1e90923fcc9c3e204ded4223306ca54a04bc65cb0e3182a3eda9aacf774d12
pdf-font-stream PDF embedded font (sfnt) at offset 0x666F 4900 bytes
font_01_sfnt_off0000772c.bin
8d6a20c30667ebf502d4f0745290c01cbe43316a16e9d9b9d52c532bca9761f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x772C 11012 bytes
font_02_sfnt_off00009cc2.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC2 4324 bytes